iSCSI & IP SAN.ppt

《iSCSI & IP SAN.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、iSCSI&IPSANIPStorageProtocolsFCIP–FCoverIP(tunnel)iFCP–InternetFCP(map)iSCSIiSNS–internetStorageNameServiceiSCSIiSCSIisaNativeIPStorageBlockLevelProtocolDesignedforusedirectlybyenddevicesCommandsstillconformtoT10SCSIspecificationsUsesTCPasitsNetworktransportUsesIPSecfor

2、SecurityNotanFCencapsulationprotocol为什么需要iSCSI解决了SCSI协议在设备数目和连接距离上的限制为SAN提供了一种高性价比的传输协议和各种存储管理结合起来，可以提供灵活的备份、镜像、灾难恢复以及次级存储解决方案iSCSIProtocolFeatures--MultipleTCPconnectionsforasinglesessionCRCdigestsforheaderanddataTCPconnectionfailurerecoveryoptionsOutofOrderdataplaceme

3、ntSupportedOptionsNegotiatedonSessionCreationiSCSIOptionsSecurityParametersLargePDUStore&ForwardHeader&DataDigestsTargetReadPaddingTargetWritePaddingNOP-InPDUtransmitImmediateDataAllowedAuthenticationSupportInitialR2TMultipleR2TAsynchronousMessagesMultipleTCPConnections

4、perLoginSessionSNACKErrorRecoveryLevelandmore…iSCSIiSCSI在SAM中的位置iSCSI协议栈ISCSI协议模型（1）ISCSI协议模型（2）iSCSI网络包的封装(1)iSCSI网络包的封装(2)iSCSIPDUKeyRegistersiniSCSICmdSN：保证命令顺序提交到SCSI中间层（HistorRAID中：SCST）ExpCmdSN：中间层期望得到的命令序号MaxCmdSN：启动器用于判断目标器的命令队列空间：MaxCmdSN－ExpCmdSN＋1StatSN，ExpS

5、tatSN，DataSN，R2TSN等等iSCSI节点•iSCSIPortal-acomponentofanetworkentitythathasaTCP/IPnetworkaddressandmaybeusedbyaniSCSInodewithinthatnetworkentityfortheconnection(s)withinoneofitsiSCSIsessions.AnetworkportalinaninitiatorisidentifiedbyitsIPaddress.Anetworkportalinatargetisid

6、entifiedbyitsIPaddressanditslisteningTCPport.•iSCSINode-asingleiSCSIinitiatororiSCSItarget.TherecanbeoneormoreiSCSInodeswithinannetworkentity.Session&ConnectionLoginInitiationiSCSICommandandDataFlowiSCSI研究热点协议性能测试（AperformanceanalysisoftheiSCSIprotocol）软硬iSCSI对比读写长度网络参数

7、（socket缓存、网络延迟）iSCSI参数（？）提高协议性能（AcachingstrategytoimproveiSCSIperformance）缓存（DCD）RDMA（AnOverviewofRDMAoverIP）协议安全（Performancestudyofsoftware-basediSCSIsecurity）IPSEC/SSL协议应用（PerformanceEvaluationofDistributediSCSIRAID）分布式应用存储管理iSCSIHBA卡Adaptec7211C(Copper)$660.00Adaptec

8、StorageProtocolAccelator(SPA)forcompleteTCP/IPoffloadandanon-boardprocessorforiSCSIfunctionsAlacritechSES1001H